Mention that objectClass names are valid in the attrs=<attrlist> clause.

doc/man/man5/slapd.access.5

@@ -115,7 +115,9 @@ It is a comma-separated list of attribute types, plus the special names
 .BR entry ,
 indicating access to the entry itself, and
 .BR children ,
-indicating access to the entry's children.
+indicating access to the entry's children. ObjectClass names may also
+be specified in this list, which will affect all the attributes that
+are required and/or allowed by that objectClass.
 .LP
 The last three statements are additive; they can be used in sequence 
 to select entities the access rule applies to based on naming context,